Nut or bolt lock.



No. 675,I9l. Patentgd May 28, 190i.

W. A. BONSAGK. v

NUT OR-BDLT LOCK.

(Application filed Sept. '7, 1900.)

(No Model.)

I 'y i- NITED TATES ATENT OFFICE.

NUT OR BOLT LOCK.

SPECIFICATION forming part of Letters Patent No. 675,191, dated May 28,1901. Application filed September 7, 1900. Serial No. 29,252. (Nomodel.)

To all whom it may concern.-

Be it known that I, WILLIAM A. BONSACK, a citizen of the United States,residingin the city of St. Louis, in the State of Missouri, haveinvented certain new and useful Improvements in Nut orBolt Locks, ofwhich the following is a full, clear, and exact description, referencebeing had to the accompanying drawings, forming part of thisspecification.

My invention relates to a lock forsecuring bolts and nuts, and, brieflystated, comprises a Washer suitably held and a locking-plate fixed tosaid washer in such manner as to bear against the nut or bolt to besecured.

Myinvention consists in features of novelty hereinafter fully described,and pointed out in the claim.

Figure I is a longitudinal sectional view illustrating my nut and boltlock. Fig. II is a perspective view of the locking-plate. Fig. III is aperspective view of the washer. Fig. IV is a longitudinal sectional viewthrough parts connected by two bolts, illustrating the application of mylock in such instance. Figs. V and VI are perspective views of thewasher and locking-plate used in the form of the device illustrated inFig. IV. Fig. VII is a perspective view of the rear side of a modifiedform of Washer.

1 designates the bolt, and 2 the nut thereon.

3 designates a washer provided with a bolthole at and having a shoulder5.

Where the device is used to secure a single nut or a single bolt, it isnecessary that the washer 3 be held from turning, so thatits positionmay remain fixed, and to so holdthe washer I employ a suitable fastenerinserted through an aperture 7 in the washer and entering into the partor parts held. by the bolt and nut. In Fig. I, I have shown a screw 6utilized for the purpose named; but it is evident that other equivalentmeans may be used in the same placeas, forinstance, where the articlethrough which the bolt passes is of wood a nail or pin may besubstituted for the screw. Instead of using the screw 6 or similarholding means ears 6 may be applied to the washer 3, as illustrated inFig. VII, the ears being designed to straddle the part to which thewasher is applied and hold it from turning on the bolt.

8 designates a locking-plate seated between the shoulder 5 of the washer3 and the nut or head of the bolt to be secured. This lockingplate isheld in place against the washer 3 by a rivet 9, inserted through acurved slot 7 in the washer and an aperture 11 in the lockingpiate. Thelocking-plate is held securely by the rivet without liability ofbecoming accidentally displaced from its seat; but when at any time itis desired to free the nut or bolt it is only necessary to out the rivetby the use of a cold-chisel or other suitable implement, when the platemaybe lifted off of the rivet out of its seat.

The washer 3 is provided with the curved slot 7 to facilitate theremoval of an old rivet and the insertion of a fresh one without thenecessity of removing the Washer. The provision of the slot in thewasher also provides for adjustment of the locking-plate to and from thelock or bolt to be secured, inasmuch as the rivet by which thelocking-plate is se-' cured to the washer may be located in any positionthroughout the extent of the slot. The slot curving from the edge of theplate toward the bolt-hole permits the proper placing of thelocking-plate and also permits the ready removal of the locking-plate asthe rivet is slipped through the slot to the washers edge.

In Figs. IV to VI, inclusive, I have shown the parts of a form suitablefor securing a pair of nuts or bolts located in proximity to each other.In this instance the washer 3 is provided with two bolt-holes l and heldat each end by the bolts, and the screw 6 or other holding means isdispensed with. The locking-plate 8 is applied to the washer by a rivet9 passing therethrough in the same manner as in the construction wherebut a single nut or bolt is held, the locking-plate bearing against thetwo nuts or bolts secured. Any inclination of one nut or bolt to turn isprohibited by the other nut pressing against the locking-plate, so thatthe two nuts or bolts through the interposed locking-plate act to holdeach other.

The openings and slots in the Washer and locking plate are preferablyconcaved, as shown, in order that the heads of the rivets, screws, orother parts passing therethrough may lie flush with the surfaces of theparts through which they pass, so that the parts may be snugly fitted.

It is obvious that the locking device herein shown and described maybeapplied to both the heads of bolts and to nuts collectively, as shown,or that it may be applied to either in- 5 dividually without applying itto the other.

I claim as my invention In a nut or bolt lock, the combination of a lwasher through which the bolt passes, said washer being provided with acurved slot; a

locking-plate adapted to bear against the 10 member to be secured, and arivet removably and adjustably located in the slot of said washerarranged to secure said plate to said Washer, substantially asdescribed.

WILLIAM A. BONSACK. In presence of- E. S. KNIGHT, N. V. ALEXANDER.

